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...fastly retrieve the high-order word from 32bit var?
Autor: Martin
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Tip Rating (6):  
     


The HiWord function retrieves the high-order word
from the given 32-bit value.

Instead of using HiWord(var32)

use: Word(var32 shr 16)

this is over 60% faster then calling HiWord() function.
Don't make procedure or function out of it (you'll kill the speed).

You could use Word(var32) over LoWord(var32)
but it's less then 1% faster.

********

Die HiWord Funktion extrahiert die das höherwertige Wort (Word) von einem
gegebenen 32-bit Wert.

Anstelle von HiWord(var32)
Verwende: Word((var32 shr 16)

Dies ist über 60% schneller als die HiWord() Funktion

Man könnte auch Word((var32) anstatt LoWord((var32) aber dies
ist weniger als 1% schneller.

 

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